Gas-engine speed control



Sept. 29, 1925. 1,555,116

R, w. KELLAR GAS ENGINE SPEED CONTROL Filed Sept. 16 1922 R W gowcnro'c (Tristan Patented Sept. 29, 1925.

R. WOSTER KELLAR, OF LA GROSSIE, INDIANA.

GAS-ENGINE SPEED CONTROL.

Application filed September 16, 1922.

To all whom 2'25 may concern Be it known that I, R. VVos'rnR KELLAR,

a citizen of the United States, residing at La Crosse, in the county of La Porto and State of Indiana, have invented certain new and useful Improvements in Gas-Engine Speed Controls, of which the following is a specification.

My invention relates to improvements in gas'cngine speed control and it more especially consists of the features hereinafter pointed out in the annexed claims.

The purpose of my invention is to provide a speed control for internal combustion engines, whether such engines are used for stationary purposes or on automobiles, motor boats, airplanes, etc.; that provides positive means for preventing the racing of engines; that also provides means for limiting the maximum speed of engines and that makes these provisions in such a manner that ordinary inspection will not disclose the location of the control. By reason of these objectives, owners of engines may themselves limit the speed at which the engine can be driven by an attendant, which also permits the owners of fleets of trucks to control the speed of their equipment, thus conserving the life of the trucks and also reducing the wear and tear of the public highways. In addition, State police oflicials may license motor trucks for certain speeds according to their weight and the load they are intended to carry by installing one of my devices between the carburetor and the engine cylinder and aflixing a seal to prevent tampering.

With these and other ends in View, I illustrate in the accompanying drawing such instances of adaptation as will disclose the broad underlying features without limiting myself to the specific details shown thereon or described herein.

Figure 1 is a side elevation of a carburetor and flange attached to an engine cylinder.

Fig. 2 is an enlarged section of the attachment flange disclosing the location of my control device.

Fig. 3 is a front elevation of Fig. 2.

Fig. 4 is an elevation of perforate control disks.

In practically carrying out my invention, I may use various alternative eXpedients according to the exigencies of trafiic conditions Serial No. 588,675.

etc., without departing from the spirit of my invention. V

In the operation of automotive engines, it has been found that fly ball or similar governing means are so easily tampered with that they are of little practical value, but with my device the ultimate or maximum speed of the engine can be definitely controlled so that with the engine throttle wide open a predetermined speed cannot be ceeded. The device is quite invisible and the most careful external inspection will not reveal its presence. It is placed between the flange portion 3 of the manifold 2 and the flange l of the carburetor throttle pipe 5. The intake manifold is attached to the cylinder 1 in any well-known manner. The usual throttle 6 is placed between the carburetor 7 and the flanges 3 and 1.

The device is extremely simple. It may consist of two differently formed disks, or of duplicately formed disks 9. The disks are frictionally securedto each other at their center by pivot pin 12, or any suitable substitute. The disks 9 have a series of concentrically placed openings formed therein, an outer group 18, an inner group 19 and intermediate groups as shown in Fig. 5. The control disks are placed between the gaskets 8 as shown in Fig. 2 so as to control the manifold opening 11 and the carburetor opening 10.

The disks are moved over each other to more or less restrict the free passage of gas through their openings. If one disk is moved sufliciently far over the other one so as to have their openings out of register with each other, the engine would, obviously, be unable to suck in gases from the carburetor. In actual practice, it has been found that the presence of the disks which are adjusted to each other does not hamper the running of the engine at speeds below the maximum for which the disks are set, and when once set the disks require no further attention as they are tightly clamped between the gaskets 8.

The disks 9 permit a more uniform clensity of fuel flow than disks which have segmental openings, because in the latter there are only two quadrants through which gas can pass at their full opening and these are at isolated portions of the cross section of the fuel passage, while in the case of Fig. 4 there is a more uniform distribution of the fuel throughout the cross section of the fuel passage. In the broadest sense it is immaterial as to the kind of openings that are formed in the disk or as to the number of the openings, so long as the material remaining between them is sufiiciently strong to withstand the suction of the engine, in consequence of which the device is Claimed in its broadest scope.

What I claim is:

1. In speed limiting devices, an engine cylinder, a carburetor, a connecting passage therebetween, a throttle in such passage, a thin metallic disk having a plurality of variable sized openings therethrough, another thin metallic disk also having a pluralty of similar openings therethrough, means for relatively fixedly securing the disks to each other, and means for securing the assembled disks between the throttle and the engine cylinder.

2. In speed limiting devices, a restricting disk provided with a plurality of openings therethrough arranged concentrically, the

the disks in a gas passageway in a sealed-in manner.

4'. In speed limiting devices, means for selectively restricting the flow of gas between a carburetor and an engine cylinder comprising a plurality of pivoted-togethcr disks, means embodied in the disks for admitting a predetermined flow of gas through a plurality of openings arranged over the entire area of the disks, and means for holding the adjusted disks against relative dis placement between the carburetor and the cylinder.

In testimony whereof I aflix my signature.

R. \VOSTER KELLAR. 

